1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8b04fb45aa311f68e0b2080c5a133c1b5016038208b4934138c380dc56f893. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/043640a5-7636-4256-8087-4f289ba340c0.json and https://artists.proofprofile.net/proofs/artist/043640a5-7636-4256-8087-4f289ba340c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbca71f35d3b55835e8b16ff5feab69d5564fd2813172082eb6bc9aae5ce52. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4208b21b575f0cd8d29afd87340b09d520d451253a1e0af0988bf053e56135a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafe58f14aeab5e23ecc490bd549f927cea39eed6fa3a58fb7b5a866b8c19560. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO861900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf9fb3c2fd99b7a17de0a51ede6f83566c4e5e1adb86fa023c5965dc0798dd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO861700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd080c0e8c386c55c87898345c03751c32e059b2075db209d0819d210931727. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb987a0b0844b9c90ef8ba6bc430a831c13dbba1b9291826860b2c5bd18b3fc89. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4a39a48a0344c9abf04c6dee7d3189bca0c25edd6cbea139cf87c8aabbd56d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00fa63ee650b56bdc06e5338b2cf64a3a2646b6a772195d38f9998e0959dbfb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395d430f1832d0d37d40b2325cbe4c383f140a4c32c230a9f9588d999334273e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec400dbc26396aa42bd0c35d0f54d07f7034d190422500c3bb6fdc2aa955ce0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAO862000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f0436243cb49a5ef099a23fee5fcc54d12e4f10073e2764480196cc603fde0. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC481803079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2429e3a6fcacbca6060ed9d301eff978de6208ee2f238bdf60de7675259a50a6. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC481500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a8765824bee5c58e1f3e0329a177ebd732d8f7222751b5ef42143bbb5c155. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC481500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3525f3b5e4c6066bdc917bdc51854016904e453fba9ba6a9ae1ae3b5a87a8974. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC481500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609644963dfe6474506303c4df9bcb5423e20d2842e2ae78c56911870cdf3c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2305621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8bade3f83694fbbec0a26122016202f93fde994cf21e17ff17254d11d36e29. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHQ2395463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4baf88bcea5b053a0d97d8824f5066473d001cad10f4a206d117c11db6307. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHQ2395468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e1e06a2d05f19e715a24f8969f6b6fee3b02970dde661fce81def2cdc6862f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHQ2395503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f482c0a21d86cd46aa5b7791f766dab798ce4c2a364e4d4898d1dd65f2a7e40. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHJ2308858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5411d9e0305cf10a80a332c3338748b910dd90a0834b60a9fe8dd6730f43ebaa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHE2345692.
Don't Stop (Official Theme Song to the Film Daryn's Gym)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fbd2fd5e92961a0fbf8478a6881ea5a95d67bf6244f992a591631e81ce69d. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHN2372576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567f5d21d91961817a6cb9414dc656c65da5aa94b819be9bb3b821aea3ff95fd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC481803149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c6da1e3619a1705b018c153366874b34af8ca5a4e3aeb8190fd62f62d5ae7a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC481704530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96427f4df87b2f713bf3f22f65cf71117e61416219f9e832f4868a5611f9bb4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4DW1645720.